Cable-reeling mechanism for electric locomotives.



P. L. SESSIONS 6; D. T. FISHER. CABLE REBLING MECHANISM FOR ELECTRICLOCOMOTIVES.

APPLICATION FILED 00T.6, 1909.

1,132,740. I Patented Mar.23,1915

2 SHEETS-SHEET 1.

lm-b law THE NORRIS PETERS 60., PHOrC-Llrnu. WASHINGTON. D. c.

F. L. SESSIONS & D. T. FISHER. CABLE REELING MECHANISM FOR ELECTRICLOCOMOTIVES.

APPLICATION FILED 0GT.6, 1909.

1, 1 32,740.. Patented Mar. 23, 1915.

2 SHEETS-SHEET 2.

7 56 57 Eda 75 .4 1 /6 7/ 36 70 il Ill/Z8 7? 1,10 3 u a q2 l I 4'2 47 2witnesses 5 ,96 J 9 YHE NORRIS PETERS 60., PHOTO-LITHO., WASHINGTON. D.t

FRANK L. SESSIONS AND DUDLEY T. FISHER,

OF CGLUMBUS, OHIO, ASSIGNORS TO THE JEFFREY MANUFACTURING COMPANY, ACORPORATION OF OHIO.

CABLE-REELING MECHANISM FOR ELECTRIC LOCOMOTIVES.

Application filed October 6, 1909.

T all whom it may concern:

Be it known that we, FRANK L. SESSIONS and DUDLEY T. Fisrrnn, bothcitizens of the United States, residing at Columbus, in the county ofFranklin and State of Ohio, have invented certain new and usefulImprovements in Cable-Reeling Mechanisms for Electric Locomotives, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

This invention relates to cable reeling mechanisms such as are employedon electric mine locomotives to wind and unwind a flexible conductorcable which brings the current from a fixed conductor, such as a trolleywire, to the motor of the locomotive. Its object is to provide anautomatically acting power mechanism for controlling the winding andunwinding of the reel, which produces a comparatively uniform tension inthe cable under all conditions of use.

Figure 1 of the drawings is a side view of an electric locomotive havinga cable reeling mechanism embodying our invention. Fig. 2 is a plan viewof the locomotive. Fig. 3 is a vertical section of the cable reelingmechanism. Fig. 4 is a plan view of the mechanism. Fig. 5 is a diagramof the electric connections of the locomotive.

The locomotive frame 1 is mounted upon the axles 2, upon which arerigidly secured the wheels 3, 3. The axles are driven by the electromotors 4, 4, which are geared respectively to the two axles. At the rearend of the locomotive is mounted the motormans seat 5, electriccontroller 6 for the motors 4, 4, and the brake wheel 7 adapted tooperate the brakes 8, 8. At the forward end of the locomotive there ismounted the cable reeling mechanism 9, upon which the conductor 10 iswound. Current can be conducted to the motors 4, 4 by this cable 10 orby means of the trolley pole and wheel 11, depending upon whether atrolley wire be available for contacting with the trolley wheel.

The reel 12 consists of the wooden center 13, the sheet steel flanges14, 15 bolted thereto, and the cast iron hub ring 16, the inner face ofwhich engages with friction shoes 17 carried by the drive disk 18 andheld in engagement with the hub by means of the springs 19. The disk 18fits upon the square ended vertical drive shaft 20, which is ro-Specification of Letters Patent.

Patented Mar. 23, 1915. Serial No. 521,388.

tatably supported in ball bearings 21, 22 suitably mounted in the frameparts 23, 24 respectively. These frame parts are supported in anysuitable manner upon the locomotive frame 1, preferably in such aposition that the reel proper is located just above the top plane of thelocomotive. The frame part 23 and motor head 25, which is securedthereto, constitute a motor case, and the motor head in conjunction withthe frame part 24 constitute a case for the gearing to be presentlydescribed.

The motor casing supports ball bearings 26, 27, in which is mounted thequill 28 in a concentric position with respect to the drive shaft 20.This quill carries the motor armature 29, which revolves between thefield poles 30 of the frame 23, these poles being energized by the coils31. The pinion 32, which is keyed to the lower end of the quill 28meshes with the spur gear 33, which revolves on the stud 34. The hub ofthe gear wheel 33 is extended axially downward and keyed with gear teethto form the pinion 35, which is in position to mesh with the spurgear 36keyed upon the drive shaft 20. By this train of gearing the motor isopera-- tively connected with the friction disk 18.

The motor frame casting 23 is formed with an integral flange 37 whichconstitutes the lower race of the ball bearing 38, upon which the reelis vertically supported. The collector ring 39 attached to the end faceof the wooden reel center 13, is in position to slidably engage thecollector brush 40, mounted on the block 41 of insulating material,which rests upon the motor head 25. The collector ring 39 is providedwith the connector 34 to which the inner end of the cable 10 iselectrically secured, and the brush 40 is likewise provided with aconnector 42 adapted to receive the wire which leads to the circuits ofthe reel motor and the locomotive motors.

hen the trolley wheel is in engagement with the trolley wire the switch43 is held in position by the spring 44 to electrically connect thetrolley wheel with the controller 6 and the motors 4. When the apparatusis so adjusted the conductor 10 and the reel motor 29 are out ofcircuit. As soon as the conductor cable 10 is connected with the sourceof electricity, the electro-magnet 45 is energized and the switch 43automatically moved into position to connect the cable with thecontroller 6 and motors 4. By the very act of connecting the cable withthe current source, the reel motor 29 is electrically energized. It isso energized as long as the conductor cable is in use and operates as asource of mechanical power to wind the reel when the locomotive is movedtoward the point where the outer end of the cable is secured to thetrolley wire and operates as an electromagnetic brake to check theunwinding movements of the reel when the locomotive is going in theopposite direction. By interposing a friction drive between the m0- torand the reel the tension upon the cable is maintained relativelyconstant, both while it is being wound and while it is being unwound,irrespective of the conditions under which the motor may be operating,of variation in line voltage, of variation in the speed of thelocomotive and of the direction in which the locomotive may be moving.lhe friction drive transmits only the power necessary to bring about thedesired cable tension, and any excess of power spends itself in thegreater speed of the armature, which is permitted by means of thefriction connection to slip relatively to the reel.

It will be observed that the drive disk 18, and the reel 12 are fixedlymounted so as to be incapable of any movement except rotary movement. Inorder to effect frictional engagement between these two parts therelatively movable shoes 17 are provided. In this way we avoid thenecessity for relative bodily movement between the drive element and thereel such as has been necessary in earlier devices with which we arefamiliar.

electric motor mounted with its armature.

axis in vertical position, a horizontal annular ball race on the frameof the motor, a cable reel provided with a central recess adapted toreceive the upper part of the motor casing, balls arranged to besupported on the ball race of the motor casing, and to rotatably supportthe cable reel to permit it to rotate about a vertical axis coincidentwith the axis of the motor armature, and a power connection between thearmature and the reel.

2. In a cable reeling mechanism for an electric locomotive, thecombination of an electric motor provided with a hollow armature shaft,a shaft extending through the hollow armature shaft and mounted forrotation at a different speed therefrom, a cable reel mounted forrotation about an axis coincident with the axis of the armature shaft,gearing between the armature shaft and the rotatable shaft extendingthrough it for driving the last said shaft at a speed difierent fromthat of the armature shaft, and a frictional power connection betweenthe other end of the said rotatable shaft and the reel.

In testimony whereof we affix our slgnatures, in presence of twowitnesses.

FRANK L. SESSIONS. DUDLEY T. FISHER.

Witnesses:

L. HorKINs, E. P. SNIVELY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Batents,

Washington, D. Q.

